DataTables Left Join, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Data;
namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            DataTable dtLeft=new DataTable();
            dtLeft.Columns.Add("sno");
            dtLeft.Columns.Add("eno");
            
            DataRow drLeft=dtLeft.NewRow();
            drLeft[0]="1";drLeft[1]="0001";
            dtLeft.Rows.Add(drLeft);
            drLeft=dtLeft.NewRow();
            drLeft[0]="2";drLeft[1]="0003";
            dtLeft.Rows.Add(drLeft);
            
            DataTable dtRight=new DataTable();
            dtRight.Columns.Add("eno");
            dtRight.Columns.Add("ename");
            DataRow drRight=dtRight.NewRow();
            drRight[0]="0001";drRight[1]="name1";
            dtRight.Rows.Add(drRight);
            drRight=dtRight.NewRow();
            drRight[0]="0002";drRight[1]="name2";
            dtRight.Rows.Add(drRight);
            Console.WriteLine("Hello, world!");
            dtLeft.Columns.Add("ename");
            //dtLeft.Columns["ename"].SetOrdinal(0);
            var Result = from Leftrow in dtLeft.AsEnumerable()    join Rightrow in dtRight.AsEnumerable() on Leftrow["eno"] equals Rightrow["eno"]
                into temp
    from r in temp.DefaultIfEmpty()    select Leftrow.ItemArray.Concat((r == null) ? (dtRight.NewRow().ItemArray) : r.ItemArray).ToArray();
 
 
 
 
 //dtLeft.Columns.Add("ename");
 int row=0;
            foreach (object[] values in Result)    {dtLeft.Rows[row]["ename"]=values[dtLeft.Columns.Count+1];row++;}//dtLeft .Rows.Add(values);

for(int i=0;i<dtLeft.Rows.Count;i++)
            {
                for(int j=0;j<dtLeft.Columns.Count;j++)
            {
                Console.Write(dtLeft.Rows[i][j].ToString()+"\t");
            }
                Console.Write("\n");
            }
            
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,19 sec, absolute running time: 0,19 sec, cpu time: 0,17 sec, average memory usage: 20 Mb, average nr of threads: 4